A continuous available (CA) server for medical imaging applications

Academic Radiology
H K HuangZ Zhou

Abstract

The trend of medical imaging research and application is toward large database management and manipulation, which requires a robust image server to receive image data from sources and to deliver them to users reliably and in a timely fashion. This article describes the design, implementation, and clinical applications of a continuous available (CA) image server for these purposes. The design of the CA image server is based on the concept of a triple modular redundancy server with three redundant server modules. Coupled with a majority voting mechanism in the three modules and failover software, the triple modular redundancy server takes care of all single points of failure hardware components in the CA image server automatically to achieve fault tolerance. Methods and procedures of evaluating the fault tolerance system reliability caused by network connectivity, motherboard, and disk storage failures are described. Thorough experimental results in laboratory and clinical environments verify that the image server achieves 99.999% hardware up time (or 5 minutes/year down time), satisfying the industrial terminology of hardware continuous availability. Performance of failover of the CA image server is automatically tabulated durin...Continue Reading

References

Jul 17, 2004·Radiographics : a Review Publication of the Radiological Society of North America, Inc·Brent J LiuGreg Mogel

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Citations

Jun 2, 2009·American Journal of Hematology·Guido A HeymannAbdulgarbar Salama

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